luckyjackaubrey, Just off the cuff,(WITHOUT READING THRU 10,000 pages,), I recall that GEOTECH.COM,was playing around down in AZ (perhaps it appears that CEO JB worked very close with GEOTECH.COM along with Dr.Jhon M. Guilbert from the BOD, that they were perfecting the art of ZTEM as seamingly a test range of values & depths. This is my worst recollection that I am not exact to the details of WHAT they did with the ZTEM, but it looked like the PIPES & some lines on the TOMBSTONE. The PIPES are for certain. The reference was made in that Dr.Guilbert was so certain of his annalogy of COPPER PORIFERIES. Which in fact proved to be a true science for the basis of CALDARAS and thus how CEO J.Briscoe researched and discovered the BCSP in AK. ky